Tears have an antiseptic property due to the presence of:

1. Lysosome
2. Aqueous humour
3. Lysozyme
4. Vitreous humour

Which of the following is responsible for the adjustment of the size of pupil ?

1. Iris
2. Sclera
3. Lens
4. Choroid

The thin, transparent extension of sclerotic layer found in front of the lens is:

1. Cornea
2. Cochlea
3. Conjunctiva
4. Choroid

The part of the inner ear which is responsible for hearing is :

1. Semicircular canal
2. Utriculus
3. Cochlea
4. Sacculus